package main

import (
	"fmt"
	"strconv"
)

func main() {

	var num1 int
	fmt.Println("请输入数字")
	fmt.Scan(&num1)

	var num2 = strconv.Itoa(num1)
	var num3 string
	for _, i := range num2 {
		num3 = string(i) + num3
		i++
	}

	fmt.Println(num3)
}
